[HarfBuzz] what not to indic shape

[Martin Hosken]

Dear Behdad,

> > The questionable ones are rare scripts and I would take the risk of treating them as simple given there is no reordering involved. We can always move them with a bug report. One key aspect is that there is no reordering involved, and that's a key issue.
> 
> The way I designed the shaper, the idea was to use it for nonreordering
> scripts too.  If the script can use blwf, abvf, etc features, it belongs to
> this shaper.

But I'm pretty certain they don't. I might do some more digging to get the actual proposals to find out, but IIRC they don't.

Yours,
Martin